this year's festival pays tribute to its late founder warren hellman who died last december. >>> clearly this is no ordinary weekend in san francisco. and that presents some unique challenges for police. cbs 5 reporter anne makovec takes us behind the scenes with the men and women in charge of crowd control. >> it's been a huge leadup to this. >> reporter: because along with the spectacle, celebration and excitement, is the potential for trouble. emergency responders say they are ready. >> we've been planning for literally a year or better. >> reporter: it's go time for the department of emergency management gathered at the center on turk street with representatives from the fire and police departments, the red cross, and public transit. >> those are all little tidbits of information if something bad really happens you have to know what exists at the time. >> reporter: at the heart of any real emergency response these red telephones, the mayor's emergency telephone system, they look pretty old school but that's on purpose. >> it is analog, plain old telephone system. it's on a separate s